:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-2: #1c1c1c;
  --line: #2a2a2a;
  --line-soft: #202020;
  --text: #f2f2f2;
  --muted: #9a9a9a;
  --accent: #8ab4ff;        /* 小さな青白アクセント */
  --accent-dim: #2a3550;
  --warn: #d7a24a;          /* 要見直しの控えめなアクセント */
  --warn-dim: #3a2f18;
  --tap: 44px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans",
    "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

body {
  padding: env(safe-area-inset-top) env(safe-area-inset-right)
    env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: #ff8f8f; font-size: 0.9rem; margin: 0.4rem 0 0; }

/* ボタン */
.btn {
  min-height: var(--tap);
  padding: 0 1rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
}
.btn.primary { background: var(--accent-dim); border-color: #3a4a70; color: #eaf1ff; }
.btn.ghost { background: transparent; }
.btn.small { min-height: 36px; padding: 0 0.7rem; font-size: 0.85rem; }
.btn.block { width: 100%; display: block; }
.btn:active { opacity: 0.8; }

/* ログイン */
.login { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.login-card {
  width: 100%; max-width: 360px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 18px; padding: 2rem 1.5rem;
  text-align: center;
}
.login-card h1 { margin: 0.2rem 0 0.4rem; font-size: 1.6rem; letter-spacing: 0.04em; }
.login-card form { display: grid; gap: 0.8rem; margin-top: 1rem; }
.brand {
  display: inline-block; font-weight: 700; letter-spacing: 0.12em;
  color: var(--muted); font-size: 0.8rem;
  border: 1px solid var(--line); border-radius: 999px; padding: 0.2rem 0.7rem;
}
.brand.small { font-size: 0.65rem; padding: 0.15rem 0.55rem; }

input, select {
  width: 100%; min-height: var(--tap);
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--line); border-radius: 12px;
  padding: 0 0.8rem; font-size: 1rem; appearance: none;
}
input:focus, select:focus { outline: 1px solid var(--accent); }

/* トップバー */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 0.9rem;
  background: rgba(10,10,10,0.9); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar .title { font-weight: 600; letter-spacing: 0.04em; }
.topbar #logout { margin-left: auto; }

/* タブ */
.tabs {
  position: sticky; top: 56px; z-index: 9;
  display: flex; gap: 0.3rem; overflow-x: auto;
  padding: 0.5rem 0.6rem; background: var(--bg);
  border-bottom: 1px solid var(--line-soft);
  -webkit-overflow-scrolling: touch;
}
.tab {
  flex: 0 0 auto; min-height: var(--tap);
  padding: 0 0.95rem; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface);
  color: var(--muted); font-size: 0.92rem; white-space: nowrap; cursor: pointer;
}
.tab.active { color: var(--text); border-color: var(--accent); background: var(--accent-dim); }

/* リスト */
.list { padding: 0.8rem 0.7rem 1rem; display: grid; gap: 0.6rem; }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; padding: 0.85rem 0.9rem;
}
.card .card-title { font-size: 1.02rem; margin: 0 0 0.5rem; }
.meta { display: flex; flex-wrap: wrap; gap: 0.35rem; align-items: center; }

.badge {
  font-size: 0.72rem; padding: 0.18rem 0.55rem; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); background: var(--surface-2);
  white-space: nowrap;
}
.badge.owner { color: #dcdcdc; }
.badge.exec { color: var(--accent); border-color: var(--accent-dim); }
.badge.prio-high { color: #ffd9d0; border-color: #5a3330; }
.badge.prio-mid { color: #d8d8d8; }
.badge.prio-low { color: #8f8f8f; }

.card-actions { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.7rem; }
.card-actions select { width: auto; min-width: 7.5rem; min-height: 38px; }

/* 実行依頼 */
.card.requested { border-color: var(--warn); background: linear-gradient(var(--warn-dim), var(--surface)); }
.request { margin-top: 0.7rem; display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.request .req-input { flex: 1 1 8rem; min-width: 0; min-height: var(--tap); }
.btn.request-btn {
  min-height: var(--tap); flex: 0 0 auto; padding: 0 1.1rem;
  background: var(--accent-dim); border-color: #3a4a70; color: #eaf1ff; font-weight: 600;
}
.request.requested { display: block; }
.request.requested .req-status {
  margin: 0 0 0.4rem; color: var(--warn); font-size: 0.9rem; font-weight: 600;
}
.request.requested .req-at { color: var(--muted); font-size: 0.75rem; font-weight: 400; margin-left: 0.3rem; }
.request.requested .req-note { color: var(--muted); font-size: 0.82rem; margin: 0 0 0.5rem; }

/* ルーティン */
.routine { position: relative; }
.routine.review { border-color: var(--warn); background: linear-gradient(var(--warn-dim), var(--surface)); }
.routine .flag {
  position: absolute; top: 0.7rem; right: 0.7rem;
  font-size: 0.68rem; padding: 0.15rem 0.5rem; border-radius: 999px;
  border: 1px solid var(--warn); color: var(--warn);
}
.routine .flag.untaken { border-color: var(--line); color: var(--muted); }
.routine .sub { color: var(--muted); font-size: 0.85rem; margin: 0.15rem 0; }
.routine .reasons { margin: 0.5rem 0 0; padding-left: 1.1rem; color: var(--warn); font-size: 0.82rem; }
.routine .reasons li { margin: 0.1rem 0; }

.legend {
  margin: 0 0 0.2rem; padding: 0.7rem 0.8rem;
  background: var(--surface); border: 1px solid var(--line-soft);
  border-radius: 12px; color: var(--muted); font-size: 0.82rem;
}
.legend b { color: var(--text); font-weight: 600; }
.legend ul { margin: 0.4rem 0 0; padding-left: 1.1rem; }

.empty { color: var(--muted); text-align: center; padding: 2rem 1rem; }

/* 追加フォーム */
.add-wrap { padding: 0 0.7rem 1.4rem; }
.add-form { display: grid; gap: 0.7rem; margin-top: 0.7rem; }
.add-form label { display: grid; gap: 0.3rem; font-size: 0.85rem; color: var(--muted); }
.add-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; }
details > summary { list-style: none; }
details > summary::-webkit-details-marker { display: none; }